Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Habit:  herb

Description: 

Genus:  "Annuals [biennials or perennials], (1-) 3-30 cm; usually taprooted, sometimes fibrous-rooted. Stems usually 1, erect (often with decumbent-ascending branches from bases; ± woolly-tomentose, not glandular). Leaves mostly cauline; alternate; ± sessile; blades oblanceolate to spatulate or linear, bases ± cuneate, margins entire, faces concolor, gray and tomentose. Heads disciform, usually in ± capitate clusters (in axils of leaves or bracts), sometimes in spiciform glomerules. Involucres narrowly to broadly campanulate, 2.5-4 mm. Phyllaries in 3-5 series, usually white or tawny to brown (opaque or hyaline, often shiny; stereomes usually glandular distally), ± equal to unequal, chartaceous toward tips (inner phyllaries narrowly oblong, usually white-tipped and protruding distal to outer). Receptacles flat, smooth, epaleate. Peripheral (pistillate) florets 40-80 (more numerous than bisexual); corollas purplish or whitish. Inner (bisexual) florets 4-7; corollas purplish or whitish. Cypselae oblong, faces usually glabrous, sometimes minutely papillate (hairs ± papilliform, not myxogenic); pappi readily falling, of 8-12 distinct, barbellate bristles in 1 series"  (Flora of North America online).

Species:  "Tallo herbáceo, derecho, sencillo, tanto él como ambas caras de las hojas envueltos en una lana cenicienta.  Hojas decurrentes, linear-lanceoladas, con la base aflechada, el ápice agudo i las márjenes encrespadas; ca. de 4 cm. de largo i de 6-7 mm. de ancho.  cabezuelas paniculadas, con las flores centrales ☿ en el número de 10-12.  hojuelas de invólucro poco agudas.  Aquenios apenas papilosos.  Pelos de vilano entretejidos en la base"  (Reich, 1896; vol. 4, p. 53).

Habitat/ecology:  (no habitat/ecology info known by PIER)

Propagation:  Seed

Native range:  Argentina, Bolivia, Brazil, Uruguay (GRIN).  Chile (Reich, 1896; vol. 4, p. 53).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced	Skottsberg, Carl (1953) (p. 224)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554)
Chile (offshore islands) Juan Fernández Islands	Isla Más Afuera (Alejandro Selkirk Island)	introduced	Skottsberg, Carl (1953) (p. 224)
Chile (offshore islands) Juan Fernández Islands	Isla Más Afuera (Alejandro Selkirk Island)	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más Afuera (Alejandro Selkirk Island)	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554)
Chile (offshore islands) Juan Fernández Islands	Isla Santa Clara	introduced	Skottsberg, Carl (1953) (p. 224)
Chile (offshore islands) Juan Fernández Islands	Isla Santa Clara	introduced invasive	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Santa Clara	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554)
Chile (offshore islands) Juan Fernández Islands	Morro El Verdugo	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554)
Chile (offshore islands) Juan Fernández Islands	Morro Juanango	introduced invasive	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 554)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Chile (continental) Chile	Chile (Republic of)		Skottsberg, Carl (1953) (p. 224)

Additional information:
Additional online information about Gnaphalium cheiranthifolium is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Gnaphalium cheiranthifolium as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Gnaphalium cheiranthifolium may be available from the Germplasm Resources Information Network (GRIN).

References:

Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

Flora of North America Editorial Committee, eds. 2011. Flora of North America North of Mexico (online edition).

Reich, Cárlos. 1896. Flora de Chile. Imprenta Cervantes, Santiago. 6 volumes.

Skottsberg, Carl. 1953. The natural history of Juan Fernandez and Easter Island. Vol. II, Botany. Almqvist &l; Wiksells, Uppsala. 960 pp.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.